/* Perform non-arithmetic operations on values, for GDB.
- Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 97, 1998
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
#include "demangle.h"
#include "language.h"
#include "gdbcmd.h"
+#include "regcache.h"
+#include "cp-abi.h"
#include <errno.h>
#include "gdb_string.h"
extern int overload_debug;
/* Local functions. */
-static int typecmp (int staticp, struct type *t1[], value_ptr t2[]);
+static int typecmp (int staticp, struct type *t1[], struct value *t2[]);
-static CORE_ADDR find_function_addr (value_ptr, struct type **);
-static value_ptr value_arg_coerce (value_ptr, struct type *, int);
+static CORE_ADDR find_function_addr (struct value *, struct type **);
+static struct value *value_arg_coerce (struct value *, struct type *, int);
-static CORE_ADDR value_push (CORE_ADDR, value_ptr);
+static CORE_ADDR value_push (CORE_ADDR, struct value *);
-static value_ptr search_struct_field (char *, value_ptr, int,
+static struct value *search_struct_field (char *, struct value *, int,
struct type *, int);
-static value_ptr search_struct_method (char *, value_ptr *,
- value_ptr *,
+static struct value *search_struct_method (char *, struct value **,
+ struct value **,
int, int *, struct type *);
static int check_field_in (struct type *, const char *);
static CORE_ADDR allocate_space_in_inferior (int);
-static value_ptr cast_into_complex (struct type *, value_ptr);
+static struct value *cast_into_complex (struct type *, struct value *);
-static struct fn_field *find_method_list (value_ptr * argp, char *method,
+static struct fn_field *find_method_list (struct value ** argp, char *method,
int offset, int *static_memfuncp,
struct type *type, int *num_fns,
struct type **basetype,
/* Find the address of function name NAME in the inferior. */
-value_ptr
+struct value *
find_function_in_inferior (char *name)
{
register struct symbol *sym;
/* Allocate NBYTES of space in the inferior using the inferior's malloc
and return a value that is a pointer to the allocated space. */
-value_ptr
+struct value *
value_allocate_space_in_inferior (int len)
{
- value_ptr blocklen;
- register value_ptr val = find_function_in_inferior ("malloc");
+ struct value *blocklen;
+ struct value *val = find_function_in_inferior ("malloc");
blocklen = value_from_longest (builtin_type_int, (LONGEST) len);
val = call_function_by_hand (val, 1, &blocklen);
and if ARG2 is an lvalue it can be cast into anything at all. */
/* In C++, casts may change pointer or object representations. */
-value_ptr
-value_cast (struct type *type, register value_ptr arg2)
+struct value *
+value_cast (struct type *type, struct value *arg2)
{
register enum type_code code1;
register enum type_code code2;
/* Look in the type of the source to see if it contains the
type of the target as a superclass. If so, we'll need to
offset the object in addition to changing its type. */
- value_ptr v = search_struct_field (type_name_no_tag (type),
+ struct value *v = search_struct_field (type_name_no_tag (type),
arg2, 0, type2, 1);
if (v)
{
(code2 == TYPE_CODE_PTR))
{
unsigned int *ptr;
- value_ptr retvalp;
+ struct value *retvalp;
switch (TYPE_CODE (TYPE_TARGET_TYPE (type2)))
{
break; /* fall out and go to normal handling */
}
}
- longest = value_as_long (arg2);
+
+ /* When we cast pointers to integers, we mustn't use
+ POINTER_TO_ADDRESS to find the address the pointer
+ represents, as value_as_long would. GDB should evaluate
+ expressions just as the compiler would --- and the compiler
+ sees a cast as a simple reinterpretation of the pointer's
+ bits. */
+ if (code2 == TYPE_CODE_PTR)
+ longest = extract_unsigned_integer (VALUE_CONTENTS (arg2),
+ TYPE_LENGTH (type2));
+ else
+ longest = value_as_long (arg2);
return value_from_longest (type, convert_to_boolean ?
(LONGEST) (longest ? 1 : 0) : longest);
}
&& TYPE_CODE (t2) == TYPE_CODE_STRUCT
&& !value_logical_not (arg2))
{
- value_ptr v;
+ struct value *v;
/* Look in the type of the source to see if it contains the
type of the target as a superclass. If so, we'll need to
value_zero (t1, not_lval), 0, t1, 1);
if (v)
{
- value_ptr v2 = value_ind (arg2);
+ struct value *v2 = value_ind (arg2);
VALUE_ADDRESS (v2) -= VALUE_ADDRESS (v)
+ VALUE_OFFSET (v);
/* No superclass found, just fall through to change ptr type. */
}
VALUE_TYPE (arg2) = type;
- VALUE_ENCLOSING_TYPE (arg2) = type; /* pai: chk_val */
+ arg2 = value_change_enclosing_type (arg2, type);
VALUE_POINTED_TO_OFFSET (arg2) = 0; /* pai: chk_val */
return arg2;
}
else if (chill_varying_type (type))
{
struct type *range1, *range2, *eltype1, *eltype2;
- value_ptr val;
+ struct value *val;
int count1, count2;
LONGEST low_bound, high_bound;
char *valaddr, *valaddr_data;
/* Create a value of type TYPE that is zero, and return it. */
-value_ptr
+struct value *
value_zero (struct type *type, enum lval_type lv)
{
- register value_ptr val = allocate_value (type);
+ struct value *val = allocate_value (type);
memset (VALUE_CONTENTS (val), 0, TYPE_LENGTH (check_typedef (type)));
VALUE_LVAL (val) = lv;
Note: value_at does *NOT* handle embedded offsets; perform such
adjustments before or after calling it. */
-value_ptr
+struct value *
value_at (struct type *type, CORE_ADDR addr, asection *sect)
{
- register value_ptr val;
+ struct value *val;
if (TYPE_CODE (check_typedef (type)) == TYPE_CODE_VOID)
error ("Attempt to dereference a generic pointer.");
val = allocate_value (type);
- if (GDB_TARGET_IS_D10V
- && TYPE_CODE (type) == TYPE_CODE_PTR
- && TYPE_TARGET_TYPE (type)
- && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC))
- {
- /* pointer to function */
- unsigned long num;
- unsigned short snum;
- snum = read_memory_unsigned_integer (addr, 2);
- num = D10V_MAKE_IADDR (snum);
- store_address (VALUE_CONTENTS_RAW (val), 4, num);
- }
- else if (GDB_TARGET_IS_D10V
- && TYPE_CODE (type) == TYPE_CODE_PTR)
- {
- /* pointer to data */
- unsigned long num;
- unsigned short snum;
- snum = read_memory_unsigned_integer (addr, 2);
- num = D10V_MAKE_DADDR (snum);
- store_address (VALUE_CONTENTS_RAW (val), 4, num);
- }
- else
- read_memory (addr, VALUE_CONTENTS_ALL_RAW (val), TYPE_LENGTH (type));
+ read_memory (addr, VALUE_CONTENTS_ALL_RAW (val), TYPE_LENGTH (type));
VALUE_LVAL (val) = lval_memory;
VALUE_ADDRESS (val) = addr;
/* Return a lazy value with type TYPE located at ADDR (cf. value_at). */
-value_ptr
+struct value *
value_at_lazy (struct type *type, CORE_ADDR addr, asection *sect)
{
- register value_ptr val;
+ struct value *val;
if (TYPE_CODE (check_typedef (type)) == TYPE_CODE_VOID)
error ("Attempt to dereference a generic pointer.");
value is ignored. */
int
-value_fetch_lazy (register value_ptr val)
+value_fetch_lazy (struct value *val)
{
CORE_ADDR addr = VALUE_ADDRESS (val) + VALUE_OFFSET (val);
int length = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (val));
struct type *type = VALUE_TYPE (val);
- if (GDB_TARGET_IS_D10V
- && TYPE_CODE (type) == TYPE_CODE_PTR
- && TYPE_TARGET_TYPE (type)
- && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC))
- {
- /* pointer to function */
- unsigned long num;
- unsigned short snum;
- snum = read_memory_unsigned_integer (addr, 2);
- num = D10V_MAKE_IADDR (snum);
- store_address (VALUE_CONTENTS_RAW (val), 4, num);
- }
- else if (GDB_TARGET_IS_D10V
- && TYPE_CODE (type) == TYPE_CODE_PTR)
- {
- /* pointer to data */
- unsigned long num;
- unsigned short snum;
- snum = read_memory_unsigned_integer (addr, 2);
- num = D10V_MAKE_DADDR (snum);
- store_address (VALUE_CONTENTS_RAW (val), 4, num);
- }
- else if (length)
+ if (length)
read_memory (addr, VALUE_CONTENTS_ALL_RAW (val), length);
VALUE_LAZY (val) = 0;
/* Store the contents of FROMVAL into the location of TOVAL.
Return a new value with the location of TOVAL and contents of FROMVAL. */
-value_ptr
-value_assign (register value_ptr toval, register value_ptr fromval)
+struct value *
+value_assign (struct value *toval, struct value *fromval)
{
register struct type *type;
- register value_ptr val;
+ struct value *val;
char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
int use_buffer = 0;
case lval_internalvar:
set_internalvar (VALUE_INTERNALVAR (toval), fromval);
val = value_copy (VALUE_INTERNALVAR (toval)->value);
- VALUE_ENCLOSING_TYPE (val) = VALUE_ENCLOSING_TYPE (fromval);
+ val = value_change_enclosing_type (val, VALUE_ENCLOSING_TYPE (fromval));
VALUE_EMBEDDED_OFFSET (val) = VALUE_EMBEDDED_OFFSET (fromval);
VALUE_POINTED_TO_OFFSET (val) = VALUE_POINTED_TO_OFFSET (fromval);
return val;
int amount_copied;
/* Make the buffer large enough in all cases. */
+ /* FIXME (alloca): Not safe for very large data types. */
char *buffer = (char *) alloca (amount_to_copy
+ sizeof (LONGEST)
+ MAX_REGISTER_RAW_SIZE);
memcpy (VALUE_CONTENTS_RAW (val), VALUE_CONTENTS (fromval),
TYPE_LENGTH (type));
VALUE_TYPE (val) = type;
- VALUE_ENCLOSING_TYPE (val) = VALUE_ENCLOSING_TYPE (fromval);
+ val = value_change_enclosing_type (val, VALUE_ENCLOSING_TYPE (fromval));
VALUE_EMBEDDED_OFFSET (val) = VALUE_EMBEDDED_OFFSET (fromval);
VALUE_POINTED_TO_OFFSET (val) = VALUE_POINTED_TO_OFFSET (fromval);
/* Extend a value VAL to COUNT repetitions of its type. */
-value_ptr
-value_repeat (value_ptr arg1, int count)
+struct value *
+value_repeat (struct value *arg1, int count)
{
- register value_ptr val;
+ struct value *val;
if (VALUE_LVAL (arg1) != lval_memory)
error ("Only values in memory can be extended with '@'.");
return val;
}
-value_ptr
+struct value *
value_of_variable (struct symbol *var, struct block *b)
{
- value_ptr val;
+ struct value *val;
struct frame_info *frame = NULL;
if (!b)
the coercion to pointer type.
*/
-value_ptr
-value_coerce_array (value_ptr arg1)
+struct value *
+value_coerce_array (struct value *arg1)
{
register struct type *type = check_typedef (VALUE_TYPE (arg1));
/* Given a value which is a function, return a value which is a pointer
to it. */
-value_ptr
-value_coerce_function (value_ptr arg1)
+struct value *
+value_coerce_function (struct value *arg1)
{
- value_ptr retval;
+ struct value *retval;
if (VALUE_LVAL (arg1) != lval_memory)
error ("Attempt to take address of value not located in memory.");
/* Return a pointer value for the object for which ARG1 is the contents. */
-value_ptr
-value_addr (value_ptr arg1)
+struct value *
+value_addr (struct value *arg1)
{
- value_ptr arg2;
+ struct value *arg2;
struct type *type = check_typedef (VALUE_TYPE (arg1));
if (TYPE_CODE (type) == TYPE_CODE_REF)
/* This may be a pointer to a base subobject; so remember the
full derived object's type ... */
- VALUE_ENCLOSING_TYPE (arg2) = lookup_pointer_type (VALUE_ENCLOSING_TYPE (arg1));
+ arg2 = value_change_enclosing_type (arg2, lookup_pointer_type (VALUE_ENCLOSING_TYPE (arg1)));
/* ... and also the relative position of the subobject in the full object */
VALUE_POINTED_TO_OFFSET (arg2) = VALUE_EMBEDDED_OFFSET (arg1);
VALUE_BFD_SECTION (arg2) = VALUE_BFD_SECTION (arg1);
/* Given a value of a pointer type, apply the C unary * operator to it. */
-value_ptr
-value_ind (value_ptr arg1)
+struct value *
+value_ind (struct value *arg1)
{
struct type *base_type;
- value_ptr arg2;
+ struct value *arg2;
COERCE_ARRAY (arg1);
enc_type = TYPE_TARGET_TYPE (enc_type);
/* Retrieve the enclosing object pointed to */
arg2 = value_at_lazy (enc_type,
- value_as_pointer (arg1) - VALUE_POINTED_TO_OFFSET (arg1),
+ value_as_address (arg1) - VALUE_POINTED_TO_OFFSET (arg1),
VALUE_BFD_SECTION (arg1));
/* Re-adjust type */
VALUE_TYPE (arg2) = TYPE_TARGET_TYPE (base_type);
/* Add embedding info */
- VALUE_ENCLOSING_TYPE (arg2) = enc_type;
+ arg2 = value_change_enclosing_type (arg2, enc_type);
VALUE_EMBEDDED_OFFSET (arg2) = VALUE_POINTED_TO_OFFSET (arg1);
/* We may be pointing to an object of some derived type */
it to be an argument to a function. */
static CORE_ADDR
-value_push (register CORE_ADDR sp, value_ptr arg)
+value_push (register CORE_ADDR sp, struct value *arg)
{
register int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg));
register int container_len = len;
& ~(PARM_BOUNDARY / TARGET_CHAR_BIT - 1));
/* Are we going to put it at the high or low end of the container? */
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
offset = container_len - len;
else
offset = 0;
return sp;
}
-#ifndef PUSH_ARGUMENTS
-#define PUSH_ARGUMENTS default_push_arguments
-#endif
-
CORE_ADDR
-default_push_arguments (int nargs, value_ptr *args, CORE_ADDR sp,
+default_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
/* ASSERT ( !struct_return); */
}
-/* A default function for COERCE_FLOAT_TO_DOUBLE: do the coercion only
- when we don't have any type for the argument at hand. This occurs
- when we have no debug info, or when passing varargs.
-
- This is an annoying default: the rule the compiler follows is to do
- the standard promotions whenever there is no prototype in scope,
- and almost all targets want this behavior. But there are some old
- architectures which want this odd behavior. If you want to go
- through them all and fix them, please do. Modern gdbarch-style
- targets may find it convenient to use standard_coerce_float_to_double. */
+/* Functions to use for the COERCE_FLOAT_TO_DOUBLE gdbarch method.
+
+ How you should pass arguments to a function depends on whether it
+ was defined in K&R style or prototype style. If you define a
+ function using the K&R syntax that takes a `float' argument, then
+ callers must pass that argument as a `double'. If you define the
+ function using the prototype syntax, then you must pass the
+ argument as a `float', with no promotion.
+
+ Unfortunately, on certain older platforms, the debug info doesn't
+ indicate reliably how each function was defined. A function type's
+ TYPE_FLAG_PROTOTYPED flag may be clear, even if the function was
+ defined in prototype style. When calling a function whose
+ TYPE_FLAG_PROTOTYPED flag is clear, GDB consults the
+ COERCE_FLOAT_TO_DOUBLE gdbarch method to decide what to do.
+
+ For modern targets, it is proper to assume that, if the prototype
+ flag is clear, that can be trusted: `float' arguments should be
+ promoted to `double'. You should register the function
+ `standard_coerce_float_to_double' to get this behavior.
+
+ For some older targets, if the prototype flag is clear, that
+ doesn't tell us anything. So we guess that, if we don't have a
+ type for the formal parameter (i.e., the first argument to
+ COERCE_FLOAT_TO_DOUBLE is null), then we should promote it;
+ otherwise, we should leave it alone. The function
+ `default_coerce_float_to_double' provides this behavior; it is the
+ default value, for compatibility with older configurations. */
int
default_coerce_float_to_double (struct type *formal, struct type *actual)
{
}
-/* Always coerce floats to doubles when there is no prototype in scope.
- If your architecture follows the standard type promotion rules for
- calling unprototyped functions, your gdbarch init function can pass
- this function to set_gdbarch_coerce_float_to_double to use its logic. */
int
standard_coerce_float_to_double (struct type *formal, struct type *actual)
{
If PARAM_TYPE is non-NULL, it is the expected parameter type.
IS_PROTOTYPED is non-zero if the function declaration is prototyped. */
-static value_ptr
-value_arg_coerce (value_ptr arg, struct type *param_type, int is_prototyped)
+static struct value *
+value_arg_coerce (struct value *arg, struct type *param_type,
+ int is_prototyped)
{
register struct type *arg_type = check_typedef (VALUE_TYPE (arg));
register struct type *type
- = param_type ? check_typedef (param_type) : arg_type;
+ = param_type ? check_typedef (param_type) : arg_type;
switch (TYPE_CODE (type))
{
case TYPE_CODE_REF:
- if (TYPE_CODE (arg_type) != TYPE_CODE_REF)
+ if (TYPE_CODE (arg_type) != TYPE_CODE_REF
+ && TYPE_CODE (arg_type) != TYPE_CODE_PTR)
{
arg = value_addr (arg);
VALUE_TYPE (arg) = param_type;
Calls error() if the function is not valid for calling. */
static CORE_ADDR
-find_function_addr (value_ptr function, struct type **retval_type)
+find_function_addr (struct value *function, struct type **retval_type)
{
register struct type *ftype = check_typedef (VALUE_TYPE (function));
register enum type_code code = TYPE_CODE (ftype);
}
else if (code == TYPE_CODE_PTR)
{
- funaddr = value_as_pointer (function);
+ funaddr = value_as_address (function);
ftype = check_typedef (TYPE_TARGET_TYPE (ftype));
if (TYPE_CODE (ftype) == TYPE_CODE_FUNC
|| TYPE_CODE (ftype) == TYPE_CODE_METHOD)
/* Handle the case of functions lacking debugging info.
Their values are characters since their addresses are char */
if (TYPE_LENGTH (ftype) == 1)
- funaddr = value_as_pointer (value_addr (function));
+ funaddr = value_as_address (value_addr (function));
else
/* Handle integer used as address of a function. */
funaddr = (CORE_ADDR) value_as_long (function);
ARGS is modified to contain coerced values. */
-static value_ptr hand_function_call (value_ptr function, int nargs,
- value_ptr * args);
-static value_ptr
-hand_function_call (value_ptr function, int nargs, value_ptr *args)
+static struct value *
+hand_function_call (struct value *function, int nargs, struct value **args)
{
register CORE_ADDR sp;
register int i;
CORE_ADDR real_pc;
struct type *param_type = NULL;
struct type *ftype = check_typedef (SYMBOL_TYPE (function));
+ int n_method_args = 0;
dummy = alloca (SIZEOF_CALL_DUMMY_WORDS);
sizeof_dummy1 = REGISTER_SIZE * SIZEOF_CALL_DUMMY_WORDS / sizeof (ULONGEST);
sp = old_sp; /* It really is used, for some ifdef's... */
#endif
- if (nargs < TYPE_NFIELDS (ftype))
+ if (TYPE_CODE (ftype) == TYPE_CODE_METHOD)
+ {
+ i = 0;
+ while (TYPE_CODE (TYPE_ARG_TYPES (ftype)[i]) != TYPE_CODE_VOID)
+ i++;
+ n_method_args = i;
+ if (nargs < i)
+ error ("too few arguments in method call");
+ }
+ else if (nargs < TYPE_NFIELDS (ftype))
error ("too few arguments in function call");
for (i = nargs - 1; i >= 0; i--)
{
+ /* Assume that methods are always prototyped, unless they are off the
+ end (which we should only be allowing if there is a ``...'').
+ FIXME. */
+ if (TYPE_CODE (ftype) == TYPE_CODE_METHOD)
+ {
+ if (i < n_method_args)
+ args[i] = value_arg_coerce (args[i], TYPE_ARG_TYPES (ftype)[i], 1);
+ else
+ args[i] = value_arg_coerce (args[i], NULL, 0);
+ }
+
/* If we're off the end of the known arguments, do the standard
promotions. FIXME: if we had a prototype, this should only
be allowed if ... were present. */
else
{
- int is_prototyped = TYPE_FLAGS (ftype) & TYPE_FLAG_PROTOTYPED;
param_type = TYPE_FIELD_TYPE (ftype, i);
-
- args[i] = value_arg_coerce (args[i], param_type, is_prototyped);
+ args[i] = value_arg_coerce (args[i], param_type, TYPE_PROTOTYPED (ftype));
}
/*elz: this code is to handle the case in which the function to be called
{
/* stack grows downward */
sp -= aligned_len;
+ /* ... so the address of the thing we push is the
+ stack pointer after we push it. */
+ addr = sp;
}
else
{
/* The stack grows up, so the address of the thing
we push is the stack pointer before we push it. */
addr = sp;
- }
- /* Push the structure. */
- write_memory (sp, VALUE_CONTENTS_ALL (args[i]), len);
- if (INNER_THAN (1, 2))
- {
- /* The stack grows down, so the address of the thing
- we push is the stack pointer after we push it. */
- addr = sp;
- }
- else
- {
- /* stack grows upward */
sp += aligned_len;
}
+ /* Push the structure. */
+ write_memory (addr, VALUE_CONTENTS_ALL (args[i]), len);
/* The value we're going to pass is the address of the
thing we just pushed. */
/*args[i] = value_from_longest (lookup_pointer_type (value_type),
sp = PUSH_ARGUMENTS (nargs, args, sp, struct_return, struct_addr);
-#ifdef PUSH_RETURN_ADDRESS /* for targets that use no CALL_DUMMY */
- /* There are a number of targets now which actually don't write any
- CALL_DUMMY instructions into the target, but instead just save the
- machine state, push the arguments, and jump directly to the callee
- function. Since this doesn't actually involve executing a JSR/BSR
- instruction, the return address must be set up by hand, either by
- pushing onto the stack or copying into a return-address register
- as appropriate. Formerly this has been done in PUSH_ARGUMENTS,
- but that's overloading its functionality a bit, so I'm making it
- explicit to do it here. */
- sp = PUSH_RETURN_ADDRESS (real_pc, sp);
-#endif /* PUSH_RETURN_ADDRESS */
+ if (PUSH_RETURN_ADDRESS_P ())
+ /* for targets that use no CALL_DUMMY */
+ /* There are a number of targets now which actually don't write
+ any CALL_DUMMY instructions into the target, but instead just
+ save the machine state, push the arguments, and jump directly
+ to the callee function. Since this doesn't actually involve
+ executing a JSR/BSR instruction, the return address must be set
+ up by hand, either by pushing onto the stack or copying into a
+ return-address register as appropriate. Formerly this has been
+ done in PUSH_ARGUMENTS, but that's overloading its
+ functionality a bit, so I'm making it explicit to do it here. */
+ sp = PUSH_RETURN_ADDRESS (real_pc, sp);
if (STACK_ALIGN_P () && !INNER_THAN (1, 2))
{
#ifdef VALUE_RETURNED_FROM_STACK
if (struct_return)
- return (value_ptr) VALUE_RETURNED_FROM_STACK (value_type, struct_addr);
+ return (struct value *) VALUE_RETURNED_FROM_STACK (value_type, struct_addr);
#endif
return value_being_returned (value_type, retbuf, struct_return);
}
}
-value_ptr
-call_function_by_hand (value_ptr function, int nargs, value_ptr *args)
+struct value *
+call_function_by_hand (struct value *function, int nargs, struct value **args)
{
if (CALL_DUMMY_P)
{
first element, and all elements must have the same size (though we
don't currently enforce any restriction on their types). */
-value_ptr
-value_array (int lowbound, int highbound, value_ptr *elemvec)
+struct value *
+value_array (int lowbound, int highbound, struct value **elemvec)
{
int nelem;
int idx;
unsigned int typelength;
- value_ptr val;
+ struct value *val;
struct type *rangetype;
struct type *arraytype;
CORE_ADDR addr;
zero and an upper bound of LEN - 1. Also note that the string may contain
embedded null bytes. */
-value_ptr
+struct value *
value_string (char *ptr, int len)
{
- value_ptr val;
+ struct value *val;
int lowbound = current_language->string_lower_bound;
struct type *rangetype = create_range_type ((struct type *) NULL,
builtin_type_int,
return (val);
}
-value_ptr
+struct value *
value_bitstring (char *ptr, int len)
{
- value_ptr val;
+ struct value *val;
struct type *domain_type = create_range_type (NULL, builtin_type_int,
0, len - 1);
struct type *type = create_set_type ((struct type *) NULL, domain_type);
requested operation is type secure, shouldn't we? FIXME. */
static int
-typecmp (int staticp, struct type *t1[], value_ptr t2[])
+typecmp (int staticp, struct type *t1[], struct value *t2[])
{
int i;
If LOOKING_FOR_BASECLASS, then instead of looking for struct fields,
look for a baseclass named NAME. */
-static value_ptr
-search_struct_field (char *name, register value_ptr arg1, int offset,
+static struct value *
+search_struct_field (char *name, struct value *arg1, int offset,
register struct type *type, int looking_for_baseclass)
{
int i;
if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
{
- value_ptr v;
+ struct value *v;
if (TYPE_FIELD_STATIC (type, i))
v = value_static_field (type, i);
else
Each <variant alternative> is represented as a struct,
with a member for each <variant field>. */
- value_ptr v;
+ struct value *v;
int new_offset = offset;
/* This is pretty gross. In G++, the offset in an anonymous
for (i = 0; i < nbases; i++)
{
- value_ptr v;
+ struct value *v;
struct type *basetype = check_typedef (TYPE_BASECLASS (type, i));
/* If we are looking for baseclasses, this is what we get when we
hit them. But it could happen that the base part's member name
if (BASETYPE_VIA_VIRTUAL (type, i))
{
int boffset;
- value_ptr v2 = allocate_value (basetype);
+ struct value *v2 = allocate_value (basetype);
boffset = baseclass_offset (type, i,
VALUE_CONTENTS (arg1) + offset,
int index; /* displacement to use in virtual table */
int skip;
- value_ptr vp;
+ struct value *vp;
CORE_ADDR vtbl; /* the virtual table pointer */
struct type *pbc; /* the primary base class */
If found, return value, else if name matched and args not return (value)-1,
else return NULL. */
-static value_ptr
-search_struct_method (char *name, register value_ptr *arg1p,
- register value_ptr *args, int offset,
+static struct value *
+search_struct_method (char *name, struct value **arg1p,
+ struct value **args, int offset,
int *static_memfuncp, register struct type *type)
{
int i;
- value_ptr v;
+ struct value *v;
int name_matched = 0;
char dem_opname[64];
if (j > 0 && args == 0)
error ("cannot resolve overloaded method `%s': no arguments supplied", name);
- while (j >= 0)
+ else if (j == 0 && args == 0)
{
if (TYPE_FN_FIELD_STUB (f, j))
check_stub_method (type, i, j);
- if (!typecmp (TYPE_FN_FIELD_STATIC_P (f, j),
- TYPE_FN_FIELD_ARGS (f, j), args))
- {
- if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
- return value_virtual_fn_field (arg1p, f, j, type, offset);
- if (TYPE_FN_FIELD_STATIC_P (f, j) && static_memfuncp)
- *static_memfuncp = 1;
- v = value_fn_field (arg1p, f, j, type, offset);
- if (v != NULL)
- return v;
- }
- j--;
+ v = value_fn_field (arg1p, f, j, type, offset);
+ if (v != NULL)
+ return v;
}
+ else
+ while (j >= 0)
+ {
+ if (TYPE_FN_FIELD_STUB (f, j))
+ check_stub_method (type, i, j);
+ if (!typecmp (TYPE_FN_FIELD_STATIC_P (f, j),
+ TYPE_FN_FIELD_ARGS (f, j), args))
+ {
+ if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
+ return value_virtual_fn_field (arg1p, f, j, type, offset);
+ if (TYPE_FN_FIELD_STATIC_P (f, j) && static_memfuncp)
+ *static_memfuncp = 1;
+ v = value_fn_field (arg1p, f, j, type, offset);
+ if (v != NULL)
+ return v;
+ }
+ j--;
+ }
}
}
}
v = search_struct_method (name, arg1p, args, base_offset + offset,
static_memfuncp, TYPE_BASECLASS (type, i));
- if (v == (value_ptr) - 1)
+ if (v == (struct value *) - 1)
{
name_matched = 1;
}
}
}
if (name_matched)
- return (value_ptr) - 1;
+ return (struct value *) - 1;
else
return NULL;
}
ERR is an error message to be printed in case the field is not found. */
-value_ptr
-value_struct_elt (register value_ptr *argp, register value_ptr *args,
+struct value *
+value_struct_elt (struct value **argp, struct value **args,
char *name, int *static_memfuncp, char *err)
{
register struct type *t;
- value_ptr v;
+ struct value *v;
COERCE_ARRAY (*argp);
v = search_struct_method (name, argp, args, 0, static_memfuncp, t);
- if (v == (value_ptr) - 1)
+ if (v == (struct value *) - 1)
error ("Cannot take address of a method");
else if (v == 0)
{
else
v = search_struct_method (name, argp, args, 0, static_memfuncp, t);
- if (v == (value_ptr) - 1)
+ if (v == (struct value *) - 1)
{
error ("One of the arguments you tried to pass to %s could not be converted to what the function wants.", name);
}
* BOFFSET is the offset of the base subobject where the method is found */
static struct fn_field *
-find_method_list (value_ptr *argp, char *method, int offset,
+find_method_list (struct value **argp, char *method, int offset,
int *static_memfuncp, struct type *type, int *num_fns,
struct type **basetype, int *boffset)
{
* BOFFSET is the offset of the base subobject which defines the method */
struct fn_field *
-value_find_oload_method_list (value_ptr *argp, char *method, int offset,
+value_find_oload_method_list (struct value **argp, char *method, int offset,
int *static_memfuncp, int *num_fns,
struct type **basetype, int *boffset)
{
int
find_overload_match (struct type **arg_types, int nargs, char *name, int method,
- int lax, value_ptr obj, struct symbol *fsym,
- value_ptr *valp, struct symbol **symp, int *staticp)
+ int lax, struct value **objp, struct symbol *fsym,
+ struct value **valp, struct symbol **symp, int *staticp)
{
int nparms;
struct type **parm_types;
int champ_nparms = 0;
+ struct value *obj = (objp ? *objp : NULL);
short oload_champ = -1; /* Index of best overloaded function */
short oload_ambiguous = 0; /* Current ambiguity state for overload resolution */
struct badness_vector *bv; /* A measure of how good an overloaded instance is */
struct badness_vector *oload_champ_bv = NULL; /* The measure for the current best match */
- value_ptr temp = obj;
+ struct value *temp = obj;
struct fn_field *fns_ptr = NULL; /* For methods, the list of overloaded methods */
struct symbol **oload_syms = NULL; /* For non-methods, the list of overloaded function symbols */
int num_fns = 0; /* Number of overloaded instances being considered */
xfree (func_name);
}
+ if (objp)
+ {
+ if (TYPE_CODE (VALUE_TYPE (temp)) != TYPE_CODE_PTR
+ && TYPE_CODE (VALUE_TYPE (*objp)) == TYPE_CODE_PTR)
+ {
+ temp = value_addr (temp);
+ }
+ *objp = temp;
+ }
return oload_incompatible ? 100 : (oload_non_standard ? 10 : 0);
}
target structure/union is defined, otherwise, return 0. */
int
-check_field (register value_ptr arg1, const char *name)
+check_field (struct value *arg1, const char *name)
{
register struct type *t;
"pointers to member functions". This function is used
to resolve user expressions of the form "DOMAIN::NAME". */
-value_ptr
+struct value *
value_struct_elt_for_reference (struct type *domain, int offset,
struct type *curtype, char *name,
struct type *intype)
{
register struct type *t = curtype;
register int i;
- value_ptr v;
+ struct value *v;
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
}
for (i = TYPE_N_BASECLASSES (t) - 1; i >= 0; i--)
{
- value_ptr v;
+ struct value *v;
int base_offset;
if (BASETYPE_VIA_VIRTUAL (t, i))
}
-/* Find the real run-time type of a value using RTTI.
- * V is a pointer to the value.
- * A pointer to the struct type entry of the run-time type
- * is returneed.
- * FULL is a flag that is set only if the value V includes
- * the entire contents of an object of the RTTI type.
- * TOP is the offset to the top of the enclosing object of
- * the real run-time type. This offset may be for the embedded
- * object, or for the enclosing object of V.
- * USING_ENC is the flag that distinguishes the two cases.
- * If it is 1, then the offset is for the enclosing object,
- * otherwise for the embedded object.
- *
- */
-
-struct type *
-value_rtti_type (value_ptr v, int *full, int *top, int *using_enc)
-{
- struct type *known_type;
- struct type *rtti_type;
- CORE_ADDR coreptr;
- value_ptr vp;
- int using_enclosing = 0;
- long top_offset = 0;
- char rtti_type_name[256];
-
- if (full)
- *full = 0;
- if (top)
- *top = -1;
- if (using_enc)
- *using_enc = 0;
-
- /* Get declared type */
- known_type = VALUE_TYPE (v);
- CHECK_TYPEDEF (known_type);
- /* RTTI works only or class objects */
- if (TYPE_CODE (known_type) != TYPE_CODE_CLASS)
- return NULL;
- if (TYPE_HAS_VTABLE(known_type))
- {
- /* If neither the declared type nor the enclosing type of the
- * value structure has a HP ANSI C++ style virtual table,
- * we can't do anything. */
- if (!TYPE_HAS_VTABLE (known_type))
- {
- known_type = VALUE_ENCLOSING_TYPE (v);
- CHECK_TYPEDEF (known_type);
- if ((TYPE_CODE (known_type) != TYPE_CODE_CLASS) ||
- !TYPE_HAS_VTABLE (known_type))
- return NULL; /* No RTTI, or not HP-compiled types */
- CHECK_TYPEDEF (known_type);
- using_enclosing = 1;
- }
-
- if (using_enclosing && using_enc)
- *using_enc = 1;
-
- /* First get the virtual table address */
- coreptr = *(CORE_ADDR *) ((VALUE_CONTENTS_ALL (v))
- + VALUE_OFFSET (v)
- + (using_enclosing ? 0 : VALUE_EMBEDDED_OFFSET (v)));
- if (coreptr == 0)
- return NULL; /* return silently -- maybe called on gdb-generated value */
-
- /* Fetch the top offset of the object */
- /* FIXME possible 32x64 problem with pointer size & arithmetic */
- vp = value_at (builtin_type_int,
- coreptr + 4 * HP_ACC_TOP_OFFSET_OFFSET,
- VALUE_BFD_SECTION (v));
- top_offset = value_as_long (vp);
- if (top)
- *top = top_offset;
-
- /* Fetch the typeinfo pointer */
- /* FIXME possible 32x64 problem with pointer size & arithmetic */
- vp = value_at (builtin_type_int, coreptr + 4 * HP_ACC_TYPEINFO_OFFSET, VALUE_BFD_SECTION (v));
- /* Indirect through the typeinfo pointer and retrieve the pointer
- * to the string name */
- coreptr = *(CORE_ADDR *) (VALUE_CONTENTS (vp));
- if (!coreptr)
- error ("Retrieved null typeinfo pointer in trying to determine run-time type");
- vp = value_at (builtin_type_int, coreptr + 4, VALUE_BFD_SECTION (v)); /* 4 -> offset of name field */
- /* FIXME possible 32x64 problem */
-
- coreptr = *(CORE_ADDR *) (VALUE_CONTENTS (vp));
-
- read_memory_string (coreptr, rtti_type_name, 256);
-
- if (strlen (rtti_type_name) == 0)
- error ("Retrieved null type name from typeinfo");
-
- /* search for type */
- rtti_type = lookup_typename (rtti_type_name, (struct block *) 0, 1);
-
- if (!rtti_type)
- error ("Could not find run-time type: invalid type name %s in typeinfo??", rtti_type_name);
- CHECK_TYPEDEF (rtti_type);
-#if 0
- printf ("RTTI type name %s, tag %s, full? %d\n", TYPE_NAME (rtti_type), TYPE_TAG_NAME (rtti_type), full ? *full : -1);
-#endif
- /* Check whether we have the entire object */
- if (full /* Non-null pointer passed */
- &&
- /* Either we checked on the whole object in hand and found the
- top offset to be zero */
- (((top_offset == 0) &&
- using_enclosing &&
- TYPE_LENGTH (known_type) == TYPE_LENGTH (rtti_type))
- ||
- /* Or we checked on the embedded object and top offset was the
- same as the embedded offset */
- ((top_offset == VALUE_EMBEDDED_OFFSET (v)) &&
- !using_enclosing &&
- TYPE_LENGTH (VALUE_ENCLOSING_TYPE (v)) == TYPE_LENGTH (rtti_type))))
-
- *full = 1;
- }
- else
- /*
- Right now this is G++ RTTI. Plan on this changing in the
- future as i get around to setting the vtables properly for G++
- compiled stuff. Also, i'll be using the type info functions,
- which are always right. Deal with it until then.
- */
- {
- CORE_ADDR vtbl;
- struct minimal_symbol *minsym;
- struct symbol *sym;
- char *demangled_name;
- struct type *btype;
- /* If the type has no vptr fieldno, try to get it filled in */
- if (TYPE_VPTR_FIELDNO(known_type) < 0)
- fill_in_vptr_fieldno(known_type);
-
- /* If we still can't find one, give up */
- if (TYPE_VPTR_FIELDNO(known_type) < 0)
- return NULL;
-
- /* Make sure our basetype and known type match, otherwise, cast
- so we can get at the vtable properly.
- */
- btype = TYPE_VPTR_BASETYPE (known_type);
- CHECK_TYPEDEF (btype);
- if (btype != known_type )
- {
- v = value_cast (btype, v);
- if (using_enc)
- *using_enc=1;
- }
- /*
- We can't use value_ind here, because it would want to use RTTI, and
- we'd waste a bunch of time figuring out we already know the type.
- Besides, we don't care about the type, just the actual pointer
- */
- if (VALUE_ADDRESS (value_field (v, TYPE_VPTR_FIELDNO (known_type))) == 0)
- return NULL;
-
- /*
- If we are enclosed by something that isn't us, adjust the
- address properly and set using_enclosing.
- */
- if (VALUE_ENCLOSING_TYPE(v) != VALUE_TYPE(v))
- {
- value_ptr tempval;
- tempval=value_field(v,TYPE_VPTR_FIELDNO(known_type));
- VALUE_ADDRESS(tempval)+=(TYPE_BASECLASS_BITPOS(known_type,TYPE_VPTR_FIELDNO(known_type))/8);
- vtbl=value_as_pointer(tempval);
- using_enclosing=1;
- }
- else
- {
- vtbl=value_as_pointer(value_field(v,TYPE_VPTR_FIELDNO(known_type)));
- using_enclosing=0;
- }
-
- /* Try to find a symbol that is the vtable */
- minsym=lookup_minimal_symbol_by_pc(vtbl);
- if (minsym==NULL || (demangled_name=SYMBOL_NAME(minsym))==NULL || !VTBL_PREFIX_P(demangled_name))
- return NULL;
-
- /* If we just skip the prefix, we get screwed by namespaces */
- demangled_name=cplus_demangle(demangled_name,DMGL_PARAMS|DMGL_ANSI);
- *(strchr(demangled_name,' '))=0;
-
- /* Lookup the type for the name */
- rtti_type=lookup_typename(demangled_name, (struct block *)0,1);
-
- if (rtti_type==NULL)
- return NULL;
-
- if (TYPE_N_BASECLASSES(rtti_type) > 1 && full && (*full) != 1)
- {
- if (top)
- *top=TYPE_BASECLASS_BITPOS(rtti_type,TYPE_VPTR_FIELDNO(rtti_type))/8;
- if (top && ((*top) >0))
- {
- if (TYPE_LENGTH(rtti_type) > TYPE_LENGTH(known_type))
- {
- if (full)
- *full=0;
- }
- else
- {
- if (full)
- *full=1;
- }
- }
- }
- else
- {
- if (full)
- *full=1;
- }
- if (using_enc)
- *using_enc=using_enclosing;
- }
- return rtti_type;
-}
-
/* Given a pointer value V, find the real (RTTI) type
of the object it points to.
Other parameters FULL, TOP, USING_ENC as with value_rtti_type()
and refer to the values computed for the object pointed to. */
struct type *
-value_rtti_target_type (value_ptr v, int *full, int *top, int *using_enc)
+value_rtti_target_type (struct value *v, int *full, int *top, int *using_enc)
{
- value_ptr target;
+ struct value *target;
target = value_ind (v);
they can be supplied and a second call to value_rtti_type() is avoided.
(Pass RTYPE == NULL if they're not available */
-value_ptr
-value_full_object (value_ptr argp, struct type *rtype, int xfull, int xtop,
+struct value *
+value_full_object (struct value *argp, struct type *rtype, int xfull, int xtop,
int xusing_enc)
{
struct type *real_type;
int full = 0;
int top = -1;
int using_enc = 0;
- value_ptr new_val;
+ struct value *new_val;
if (rtype)
{
type is wrong, set it *//* pai: FIXME -- sounds iffy */
if (full)
{
- VALUE_ENCLOSING_TYPE (argp) = real_type;
+ argp = value_change_enclosing_type (argp, real_type);
return argp;
}
Flag COMPLAIN signals an error if the request is made in an
inappropriate context. */
-value_ptr
+struct value *
value_of_this (int complain)
{
struct symbol *func, *sym;
struct block *b;
int i;
static const char funny_this[] = "this";
- value_ptr this;
+ struct value *this;
if (selected_frame == 0)
{
/* Calling lookup_block_symbol is necessary to get the LOC_REGISTER
symbol instead of the LOC_ARG one (if both exist). */
- sym = lookup_block_symbol (b, funny_this, VAR_NAMESPACE);
+ sym = lookup_block_symbol (b, funny_this, NULL, VAR_NAMESPACE);
if (sym == NULL)
{
if (complain)
long, starting at LOWBOUND. The result has the same lower bound as
the original ARRAY. */
-value_ptr
-value_slice (value_ptr array, int lowbound, int length)
+struct value *
+value_slice (struct value *array, int lowbound, int length)
{
struct type *slice_range_type, *slice_type, *range_type;
LONGEST lowerbound, upperbound, offset;
- value_ptr slice;
+ struct value *slice;
struct type *array_type;
array_type = check_typedef (VALUE_TYPE (array));
COERCE_VARYING_ARRAY (array, array_type);
/* Assuming chill_varying_type (VARRAY) is true, return an equivalent
value as a fixed-length array. */
-value_ptr
-varying_to_slice (value_ptr varray)
+struct value *
+varying_to_slice (struct value *varray)
{
struct type *vtype = check_typedef (VALUE_TYPE (varray));
LONGEST length = unpack_long (TYPE_FIELD_TYPE (vtype, 0),
that figures out precision inteligently as opposed to assuming
doubles. FIXME: fmb */
-value_ptr
-value_literal_complex (value_ptr arg1, value_ptr arg2, struct type *type)
+struct value *
+value_literal_complex (struct value *arg1, struct value *arg2, struct type *type)
{
- register value_ptr val;
+ struct value *val;
struct type *real_type = TYPE_TARGET_TYPE (type);
val = allocate_value (type);
/* Cast a value into the appropriate complex data type. */
-static value_ptr
-cast_into_complex (struct type *type, register value_ptr val)
+static struct value *
+cast_into_complex (struct type *type, struct value *val)
{
struct type *real_type = TYPE_TARGET_TYPE (type);
if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_COMPLEX)
{
struct type *val_real_type = TYPE_TARGET_TYPE (VALUE_TYPE (val));
- value_ptr re_val = allocate_value (val_real_type);
- value_ptr im_val = allocate_value (val_real_type);
+ struct value *re_val = allocate_value (val_real_type);
+ struct value *im_val = allocate_value (val_real_type);
memcpy (VALUE_CONTENTS_RAW (re_val),
VALUE_CONTENTS (val), TYPE_LENGTH (val_real_type));
projects / deliverable / binutils-gdb.git / blobdiff